16997424517 has 8 divisors (see below), whose sum is σ = 18172005696. Its totient is φ = 15842258112.

The previous prime is 16997424481. The next prime is 16997424533. The reversal of 16997424517 is 71542479961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16997424517 - 2¹¹ = 16997422469 is a prime.

It is a super-2 number, since 2×16997424517² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16997424547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4851883 + ... + 4855384.

It is an arithmetic number, because the mean of its divisors is an integer number (2271500712).

Almost surely, 2^16997424517 is an apocalyptic number.

16997424517 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16997424517 is a deficient number, since it is larger than the sum of its proper divisors (1174581179).

16997424517 is a wasteful number, since it uses less digits than its factorization.

16997424517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9707387.

The product of its digits is 3810240, while the sum is 55.

It can be divided in two parts, 169974 and 24517, that added together give a palindrome (194491).

The spelling of 16997424517 in words is "sixteen billion, nine hundred ninety-seven million, four hundred twenty-four thousand, five hundred seventeen".